| package directory // import "github.com/docker/docker/pkg/directory" |
| |
| import ( |
| "io/ioutil" |
| "os" |
| "path/filepath" |
| "reflect" |
| "sort" |
| "testing" |
| ) |
| |
| // Size of an empty directory should be 0 |
| func TestSizeEmpty(t *testing.T) { |
| var dir string |
| var err error |
| if dir, err = ioutil.TempDir(os.TempDir(), "testSizeEmptyDirectory"); err != nil { |
| t.Fatalf("failed to create directory: %s", err) |
| } |
| |
| var size int64 |
| if size, _ = Size(dir); size != 0 { |
| t.Fatalf("empty directory has size: %d", size) |
| } |
| } |
| |
| // Size of a directory with one empty file should be 0 |
| func TestSizeEmptyFile(t *testing.T) { |
| var dir string |
| var err error |
| if dir, err = ioutil.TempDir(os.TempDir(), "testSizeEmptyFile"); err != nil { |
| t.Fatalf("failed to create directory: %s", err) |
| } |
| |
| var file *os.File |
| if file, err = ioutil.TempFile(dir, "file"); err != nil { |
| t.Fatalf("failed to create file: %s", err) |
| } |
| |
| var size int64 |
| if size, _ = Size(file.Name()); size != 0 { |
| t.Fatalf("directory with one file has size: %d", size) |
| } |
| } |
| |
| // Size of a directory with one 5-byte file should be 5 |
| func TestSizeNonemptyFile(t *testing.T) { |
| var dir string |
| var err error |
| if dir, err = ioutil.TempDir(os.TempDir(), "testSizeNonemptyFile"); err != nil { |
| t.Fatalf("failed to create directory: %s", err) |
| } |
| |
| var file *os.File |
| if file, err = ioutil.TempFile(dir, "file"); err != nil { |
| t.Fatalf("failed to create file: %s", err) |
| } |
| |
| d := []byte{97, 98, 99, 100, 101} |
| file.Write(d) |
| |
| var size int64 |
| if size, _ = Size(file.Name()); size != 5 { |
| t.Fatalf("directory with one 5-byte file has size: %d", size) |
| } |
| } |
| |
| // Size of a directory with one empty directory should be 0 |
| func TestSizeNestedDirectoryEmpty(t *testing.T) { |
| var dir string |
| var err error |
| if dir, err = ioutil.TempDir(os.TempDir(), "testSizeNestedDirectoryEmpty"); err != nil { |
| t.Fatalf("failed to create directory: %s", err) |
| } |
| if dir, err = ioutil.TempDir(dir, "nested"); err != nil { |
| t.Fatalf("failed to create nested directory: %s", err) |
| } |
| |
| var size int64 |
| if size, _ = Size(dir); size != 0 { |
| t.Fatalf("directory with one empty directory has size: %d", size) |
| } |
| } |
| |
| // Test directory with 1 file and 1 empty directory |
| func TestSizeFileAndNestedDirectoryEmpty(t *testing.T) { |
| var dir string |
| var err error |
| if dir, err = ioutil.TempDir(os.TempDir(), "testSizeFileAndNestedDirectoryEmpty"); err != nil { |
| t.Fatalf("failed to create directory: %s", err) |
| } |
| if dir, err = ioutil.TempDir(dir, "nested"); err != nil { |
| t.Fatalf("failed to create nested directory: %s", err) |
| } |
| |
| var file *os.File |
| if file, err = ioutil.TempFile(dir, "file"); err != nil { |
| t.Fatalf("failed to create file: %s", err) |
| } |
| |
| d := []byte{100, 111, 99, 107, 101, 114} |
| file.Write(d) |
| |
| var size int64 |
| if size, _ = Size(dir); size != 6 { |
| t.Fatalf("directory with 6-byte file and empty directory has size: %d", size) |
| } |
| } |
| |
| // Test directory with 1 file and 1 non-empty directory |
| func TestSizeFileAndNestedDirectoryNonempty(t *testing.T) { |
| var dir, dirNested string |
| var err error |
| if dir, err = ioutil.TempDir(os.TempDir(), "TestSizeFileAndNestedDirectoryNonempty"); err != nil { |
| t.Fatalf("failed to create directory: %s", err) |
| } |
| if dirNested, err = ioutil.TempDir(dir, "nested"); err != nil { |
| t.Fatalf("failed to create nested directory: %s", err) |
| } |
| |
| var file *os.File |
| if file, err = ioutil.TempFile(dir, "file"); err != nil { |
| t.Fatalf("failed to create file: %s", err) |
| } |
| |
| data := []byte{100, 111, 99, 107, 101, 114} |
| file.Write(data) |
| |
| var nestedFile *os.File |
| if nestedFile, err = ioutil.TempFile(dirNested, "file"); err != nil { |
| t.Fatalf("failed to create file in nested directory: %s", err) |
| } |
| |
| nestedData := []byte{100, 111, 99, 107, 101, 114} |
| nestedFile.Write(nestedData) |
| |
| var size int64 |
| if size, _ = Size(dir); size != 12 { |
| t.Fatalf("directory with 6-byte file and nested directory with 6-byte file has size: %d", size) |
| } |
| } |
| |
| // Test migration of directory to a subdir underneath itself |
| func TestMoveToSubdir(t *testing.T) { |
| var outerDir, subDir string |
| var err error |
| |
| if outerDir, err = ioutil.TempDir(os.TempDir(), "TestMoveToSubdir"); err != nil { |
| t.Fatalf("failed to create directory: %v", err) |
| } |
| |
| if subDir, err = ioutil.TempDir(outerDir, "testSub"); err != nil { |
| t.Fatalf("failed to create subdirectory: %v", err) |
| } |
| |
| // write 4 temp files in the outer dir to get moved |
| filesList := []string{"a", "b", "c", "d"} |
| for _, fName := range filesList { |
| if file, err := os.Create(filepath.Join(outerDir, fName)); err != nil { |
| t.Fatalf("couldn't create temp file %q: %v", fName, err) |
| } else { |
| file.WriteString(fName) |
| file.Close() |
| } |
| } |
| |
| if err = MoveToSubdir(outerDir, filepath.Base(subDir)); err != nil { |
| t.Fatalf("Error during migration of content to subdirectory: %v", err) |
| } |
| // validate that the files were moved to the subdirectory |
| infos, err := ioutil.ReadDir(subDir) |
| if err != nil { |
| t.Fatal(err) |
| } |
| if len(infos) != 4 { |
| t.Fatalf("Should be four files in the subdir after the migration: actual length: %d", len(infos)) |
| } |
| var results []string |
| for _, info := range infos { |
| results = append(results, info.Name()) |
| } |
| sort.Sort(sort.StringSlice(results)) |
| if !reflect.DeepEqual(filesList, results) { |
| t.Fatalf("Results after migration do not equal list of files: expected: %v, got: %v", filesList, results) |
| } |
| } |
| |
| // Test a non-existing directory |
| func TestSizeNonExistingDirectory(t *testing.T) { |
| if _, err := Size("/thisdirectoryshouldnotexist/TestSizeNonExistingDirectory"); err == nil { |
| t.Fatalf("error is expected") |
| } |
| } |